Windows XP won't start

[Mario Peralta]

My HP Pavilion 522n won't start. I tryed all the options like starting in safe mode, in normal mode, with the last settings that worked, but it allways goes to the message: \windows\system32\config\system is missing or corrupted.
It requires me to start Windows setup using the original Setup CD-ROM. My PC didn't come with a CD-ROM.
Where do I get that CD-ROM? Can I download it in a different computer?

[vidster]

If you are saying that xp came pre-installed on your pc, you should have received 1or2 disks saying something like drivers or recovery disk or something along those lines. This is the disk that you need.
If you find the disk this is the next step:
http://support.microsoft.com/?kbid=307545